Building panel



FIG. 1 is a top plan view of a building panel showing my new design;

FIG. 2 is a bottom plan view thereof shown in broken lines;

FIG. 3 is a perspective view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a front elevational view thereof. 

CLAIM The ornamental design for a building panel, as shown. 